The TLC-Direct.co.uk site has step down transformers of working ranges up
to
3000 Watts.

They've also got building site types cheaper, provided it doesn't matter
than neutral and earth are at different potentials and you don't mind BS3535
isolation.*

Christian.

* I didn't realise that transformers of that size could comply with BS3535.
Does that mean you could use them in a bathroom?